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Kim, Ju-Young
Robust Multifunctional Materials Lab
Research Interests
  • Flexible / stretchable devices, nano-mechanics, nanoporous metal, materials reliability

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Plastic deformation of indium nanostructures

Cited 7 times inthomson ciCited 10 times inthomson ci
Title
Plastic deformation of indium nanostructures
Author
Lee, GyuhyonKim, Ju-YoungBurek, Michael J.Greer, Julia R.Tsui, Ting Y.
Keywords
Indium; Plasticity; Size effect; Strain rate; Yield strength
Issue Date
2011-07
Publisher
ELSEVIER SCIENCE SA
Citation
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, v.2528, no.19-20, pp.6112 - 6120
Abstract
Mechanical properties and morphology of cylindrical indium nanopillars, fabricated by electron beam lithography and electroplating, are characterized in uniaxial compression. Time-dependent deformation and influence of size on nanoscale indium mechanical properties were investigated. The results show two fundamentally different deformation mechanisms which govern plasticity in these indium nanostructures. We observed that the majority of indium nanopillars deform at engineering stresses near the bulk values (Type I), with a small fraction sustaining flow stresses approaching the theoretical limit for indium (Type II). The results also show the strain rate sensitivity and flow stresses in Type I indium nanopillars are similar to bulk indium with no apparent size effects.
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DOI
10.1016/j.msea.2011.04.065
ISSN
0921-5093
Appears in Collections:
MSE_Journal Papers
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